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Monitor Description

The ECM continuously monitors its internal processors (CPUs), Air Fuel Ratio (A/F) sensor transistors and Heated Oxygen (HO2) sensor transistors built into the ECM. This self-check ensures that the ECM is functioning properly. If outputs from the processors deviate from the standards, the ECM will illuminate the MIL and set the DTC immediately.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No. DTC Detection Condition Trouble Area
P0607 When one of following conditions is met:
  • Air Fuel Ratio (A/F) sensor transistors built into ECM malfunctions
  • Heated Oxygen (HO2) sensor transistors built into ECM malfunctions
  • Exhaust gas leak
  • HO2 sensor
  • ECM
NOTE: An exhaust gas leak generates noise in the HO2 sensor output. The ECM may interpret this as an HO2 sensor transistor malfunction and set P0607.